23105533311 has 32 divisors (see below), whose sum is σ = 39295979520. Its totient is φ = 13143930912.

The previous prime is 23105533309. The next prime is 23105533333. The reversal of 23105533311 is 11333550132.

23105533311 is a `hidden beast` number, since 2 + 310 + 5 + 5 + 33 + 311 = 666.

It is not a de Polignac number, because 23105533311 - 2¹ = 23105533309 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23105533351) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 231960 + ... + 316253.

It is an arithmetic number, because the mean of its divisors is an integer number (1227999360).

Almost surely, 2^23105533311 is an apocalyptic number.

23105533311 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

23105533311 is a deficient number, since it is larger than the sum of its proper divisors (16190446209).

23105533311 is a wasteful number, since it uses less digits than its factorization.

23105533311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548452 (or 548446 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 27.

The spelling of 23105533311 in words is "twenty-three billion, one hundred five million, five hundred thirty-three thousand, three hundred eleven".